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$1,611+ Cheap flights from Sierra Leone to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/19. Fares are subject to change and may not be available on all flights or dates of travel.
FNA — ORD
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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Cheap flight deals from Sierra Leone to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Sierra Leone (SL0) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Round-trip from

$1,663
(United Airlines)
From Sierra Leone to Illinois
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Find flight deals from Sierra Leone to Illinois

Cheapest flights from Sierra Leone to Illinois
Explore the most affordable flight options available from Sierra Leone to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/197:35 pmFNA - ORD
2 stops22h 40mUnited Airlines
Mon 3/105:55 pmORD - FNA
1 stop19h 20mUnited Airlines
Deal found 12/17$1,611
This Gurufare deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/208:35 amFNA - ORD
3 stops29h 05mEthiopian Air
Sat 3/89:45 amORD - FNA
2 stops25h 35mEthiopian Air
Deal found 12/17$1,643
This United deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/197:35 pmFNA - ORD
3 stops24h 35mMultiple Airlines
Fri 3/74:05 pmORD - FNA
2 stops44h 10mMultiple Airlines
Deal found 12/17$1,648
This Gurufare deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/197:35 pmFNA - ORD
1 stop22h 40mBrussels Airlines
Fri 3/75:55 pmORD - FNA
1 stop18h 20mBrussels Airlines
Deal found 12/17$1,680
This SWISS deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/217:35 pmFNA - ORD
3 stops50h 40mSWISS
Mon 3/108:05 pmORD - FNA
2 stops41h 10mSWISS
Deal found 12/17$1,722
This Gotogate deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/191:20 amFNA - ORD
2 stops38h 50mTurkish Airlines
Sat 3/811:55 amORD - FNA
2 stops30h 25mTurkish Airlines
Deal found 12/17$1,973
This Air Canada deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/227:35 pmFNA - ORD
3 stops25h 10mAir Canada
Mon 3/103:35 pmORD - FNA
2 stops21h 40mAir Canada
Deal found 12/17$2,359

Find flights from Sierra Leone to Illinois within your budget

Customize your flight search to find flights from Sierra Leone to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Wed 1/8

7:35 pm-9:38 pm

3 stops32h 03m

Chicago O'Hare Intl

Fri 1/17

5:55 pm-6:15 pm

1 stop18h 20m

$1,663

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Thu 1/16

7:35 pm-9:43 pm

3 stops32h 08m

Chicago O'Hare Intl

Wed 1/22

2:01 pm-6:15 pm

2 stops22h 14m

$2,088

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Fri 1/10

5:20 am-1:55 pm

2 stops38h 35m

Chicago O'Hare Intl

Mon 1/20

4:45 pm-2:20 am

2 stops27h 35m

$2,233

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Sun 1/19

7:35 pm-4:15 pm

3 stops26h 40m

Chicago O'Hare Intl

Thu 1/23

7:05 pm-6:15 pm

2 stops41h 10m

$2,268

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Sat 1/18

1:20 am-10:10 am

2 stops38h 50m

Chicago O'Hare Intl

Sat 1/25

8:30 pm-12:20 am

2 stops21h 50m

$2,304

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Mon 1/13

8:35 am-2:34 pm

4 stops35h 59m

Chicago O'Hare Intl

Wed 1/22

9:45 am-5:20 pm

2 stops25h 35m

$2,341

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Thu 1/9

7:35 pm-12:15 pm

2 stops22h 40m

Chicago O'Hare Intl

Mon 1/20

5:55 pm-6:15 pm

1 stop18h 20m

$3,197

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Tue 1/14

7:35 pm-2:45 pm

3 stops25h 10m

Chicago O'Hare Intl

Sat 1/25

11:35 am-6:15 pm

2 stops24h 40m

$3,316

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Best time to book a flight from Sierra Leone to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Sierra Leone with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Sierra Leone to Illinois

Get recent, data-driven insights about flights from Sierra Leone to Illinois including ideal travel times, pricing trends, and more.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated December 18, 2024.
SWISS
7.6
Good
1,606 reviews

Entertainment

6.8

Boarding

7.7

Crew

8.2

Comfort

7.4

Food

7.1

Overall

7.6

Reviews

1 / 10

Thank you for the upgrade- it will make me a loyal fan

SWISS
7.6
Good
1,606 reviews
SWISS
7.6
Good
1,606 reviews

Entertainment

6.8

Boarding

7.7

Crew

8.2

Comfort

7.4

Food

7.1

Overall

7.6

Reviews

1 / 10

Thank you for the upgrade- it will make me a loyal fan

Brussels Airlines
7.4
Good
353 reviews
SWISS
7.6
Good
1,606 reviews

Entertainment

6.8

Boarding

7.7

Crew

8.2

Comfort

7.4

Food

7.1

Overall

7.6

Reviews

1 / 10

Thank you for the upgrade- it will make me a loyal fan

United Airlines
7.4
Good
9,059 reviews
SWISS
7.6
Good
1,606 reviews

Entertainment

6.8

Boarding

7.7

Crew

8.2

Comfort

7.4

Food

7.1

Overall

7.6

Reviews

1 / 10

Thank you for the upgrade- it will make me a loyal fan

Turkish Airlines
7.3
Good
3,907 reviews
SWISS
7.6
Good
1,606 reviews

Entertainment

6.8

Boarding

7.7

Crew

8.2

Comfort

7.4

Food

7.1

Overall

7.6

Reviews

1 / 10

Thank you for the upgrade- it will make me a loyal fan

Ethiopian Air
7.3
Good
781 reviews
SWISS
7.6
Good
1,606 reviews

Entertainment

6.8

Boarding

7.7

Crew

8.2

Comfort

7.4

Food

7.1

Overall

7.6

Reviews

1 / 10

Thank you for the upgrade- it will make me a loyal fan

Related info for your journey

Find useful and relevant information for your journey from Sierra Leone to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Sierra Leone to Illinois that include hotel bookings?

    Yes. In addition to deals on Sierra Leone to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sierra Leone to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sierra Leone to Illinois.

  • Can I find deals for business class flights from Sierra Leone to Illinois?

    Yes. Cheapflights offers flight deals from Sierra Leone to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sierra Leone to Illinois?

    Currently, September is the cheapest month in which you can book a flight from Sierra Leone to Illinois (average of $232). Flying from Sierra Leone to Illinois in June is currently the most expensive (average of $308). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Sierra Leone to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Sierra Leone to Illinois

Discover the top airline that operate flights from Sierra Leone to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,493Average$1,592FlexibilityNo cancel feeOn-time69%
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